Tripwire's headquarters are in the One Main Place building at the west end of the Hawthorne Bridge.

Network security specialist Tripwire has renewed its 49,600-square-foot lease in downtown Portland, opting to keep its headquarters in the heart of the city.

Jones Lang LaSalle represented KBS Realty Advisors in the deal, which retains Tripwire's offices in One Main Place at the west end of the Hawthorne Bridge. They did not disclose terms or duration of the lease.

Tripwire is one of just a handful of large tech companies with headquarters in Portland's city limits. Owned by the private equity firm Thoma Bravo, Tripwire said its 2012 revenues topped $100 million for the first time.

Tripwire had given no indication that it had contemplated leaving the city. John Pierce, the company's vice president for information systems and real estate, said in a written statement that Tripwire had not considered moving, and has a "long standing commitment to remaining a Portland company."

In 2010, chief executive Jim Johnson said he had casually considered other sites -- including Vancouver -- noting relatively high personal income taxes in Oregon.

"Vancouver's best economic development program is Oregon's taxation," Johnson said at the time.

Johnson, however, said he retained his Oregon residency because he believed in supporting the local community. And he said Tripwire's employees liked working downtown.

Tripwire has about 225 employees in Portland and more than 400 companywide.